CN100416616C - Fire detecting cable based on memory alloy wire and pressure-sensing conductive rubber and alarm method - Google Patents
Fire detecting cable based on memory alloy wire and pressure-sensing conductive rubber and alarm method Download PDFInfo
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- CN100416616C CN100416616C CNB2005101148219A CN200510114821A CN100416616C CN 100416616 C CN100416616 C CN 100416616C CN B2005101148219 A CNB2005101148219 A CN B2005101148219A CN 200510114821 A CN200510114821 A CN 200510114821A CN 100416616 C CN100416616 C CN 100416616C
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- 229910001285 shape-memory alloy Inorganic materials 0.000 title claims abstract description 115
- 229920001971 elastomer Polymers 0.000 title claims abstract description 101
- 238000000034 method Methods 0.000 title claims abstract description 9
- 238000001514 detection method Methods 0.000 claims abstract description 34
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- 239000004020 conductor Substances 0.000 claims description 74
- 239000000956 alloy Substances 0.000 claims description 14
- 229910045601 alloy Inorganic materials 0.000 claims description 10
- 238000010438 heat treatment Methods 0.000 claims description 9
- RYGMFSIKBFXOCR-UHFFFAOYSA-N Copper Chemical compound [Cu] RYGMFSIKBFXOCR-UHFFFAOYSA-N 0.000 claims description 8
- XEEYBQQBJWHFJM-UHFFFAOYSA-N Iron Chemical compound [Fe] XEEYBQQBJWHFJM-UHFFFAOYSA-N 0.000 claims description 8
- 229910052802 copper Inorganic materials 0.000 claims description 8
- 239000010949 copper Substances 0.000 claims description 8
- 229910052742 iron Inorganic materials 0.000 claims description 4
- 238000005259 measurement Methods 0.000 claims description 4
- 229910001000 nickel titanium Inorganic materials 0.000 claims description 4
- 238000006243 chemical reaction Methods 0.000 claims description 3
- KVNRLNFWIYMESJ-UHFFFAOYSA-N butyronitrile Chemical compound CCCC#N KVNRLNFWIYMESJ-UHFFFAOYSA-N 0.000 claims 3
- HQQADJVZYDDRJT-UHFFFAOYSA-N ethene;prop-1-ene Chemical group C=C.CC=C HQQADJVZYDDRJT-UHFFFAOYSA-N 0.000 claims 3
- 229920001897 terpolymer Polymers 0.000 claims 3
- 230000007613 environmental effect Effects 0.000 abstract 1
- 229910000734 martensite Inorganic materials 0.000 description 12
- 230000009466 transformation Effects 0.000 description 11
- 230000000694 effects Effects 0.000 description 6
- 239000004065 semiconductor Substances 0.000 description 6
- 230000000630 rising effect Effects 0.000 description 4
- 239000011248 coating agent Substances 0.000 description 3
- 238000000576 coating method Methods 0.000 description 3
- 238000005260 corrosion Methods 0.000 description 3
- 230000007797 corrosion Effects 0.000 description 3
- OKTJSMMVPCPJKN-UHFFFAOYSA-N Carbon Chemical compound [C] OKTJSMMVPCPJKN-UHFFFAOYSA-N 0.000 description 2
- 230000004888 barrier function Effects 0.000 description 2
- 229910052799 carbon Inorganic materials 0.000 description 2
- 230000003247 decreasing effect Effects 0.000 description 2
- 238000001125 extrusion Methods 0.000 description 2
- 230000006872 improvement Effects 0.000 description 2
- 238000009413 insulation Methods 0.000 description 2
- 239000012212 insulator Substances 0.000 description 2
- 230000007704 transition Effects 0.000 description 2
- 229920002943 EPDM rubber Polymers 0.000 description 1
- 244000043261 Hevea brasiliensis Species 0.000 description 1
- 229920000459 Nitrile rubber Polymers 0.000 description 1
- 230000008901 benefit Effects 0.000 description 1
- 238000010586 diagram Methods 0.000 description 1
- 238000005516 engineering process Methods 0.000 description 1
- 238000009422 external insulation Methods 0.000 description 1
- 239000000835 fiber Substances 0.000 description 1
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- 229920003052 natural elastomer Polymers 0.000 description 1
- 229920001194 natural rubber Polymers 0.000 description 1
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- 238000004804 winding Methods 0.000 description 1
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Abstract
This invention relates to the fire detection cable and alarm method based on the memory alloy wire and pressure-conductive rubber, comprising a memory alloy wire, a pressure-conductive rubber wire, and the said memory alloy wire and the said pressure-conductive rubber wire intertwines each other, and the two ends of the said pressure-conductive rubber wire respectively have electrical connecting terminals. Since the memory alloy wire has phase change feature, and the resistance value of the pressure-conductive rubber changes with pressure, generates the fire alarm signal according to the resistance changes conditions. It increases the maximum usage environmental temperature and the maximum usage length of the temperature-sensing cable, and effectively reduces the false alarm by detection cable own in normal temperature.
Description
Technical field
The present invention relates to a kind of disaster detection cable and alarm method based on memory alloy wire and pressure-sensing conductive rubber, constitute analog linear temperature-sensing fire detecting cable with memory alloy wire and pressure-sensing conductive rubber, adopt the resistance value stress of memory alloy wire phase-change characteristic, pressure-sensing conductive rubber to change and the characteristic of variation, produce fire alarm signal according to this changes in resistance situation.
Background technology
In the prior art, it is a kind of broad-spectrum disaster detection cable that the analog linear temperature-sensing of NTC characteristic commonly used is surveyed cable, accompanying drawing 1 (view in transverse section of cable) has shown traditional analog linear temperature-sensing detection cable structure synoptic diagram, survey in the cable at this, two detecting conductors 1 and 2 are arranged, two detecting conductors are parallel together, the barrier layer 3 (the NTC characteristic is meant negative temperature coefficient feature) that one NTC characteristic is arranged between two detecting conductors, when the detection cable is heated, rising along with temperature, the resistance of the NTC barrier layer between two detecting conductors can diminish, and reaches the purpose that thermometric is reported a fire according to this principle.The disclosed sensing cable of Chinese patent ZL03242897.9 is exactly wherein a kind of.The alarm temperature of detection cable of the prior art is relevant with the four big factors such as the length of being heated, heating temperature, environment temperature and whole length of surveying cable; The alarm temperature that we wish to survey cable is surveyed the heating temperature of cable relevant with two factors of length of being heated to other factors during only with breaking out of fire and is had nothing to do or concern less.For other two factors, NTC principle analog linear temperature-sensing of the prior art is surveyed cable and can't be eliminated, like this will be influential to the reliability of surveying cable, under hot environment, be easy to generate false alarm, and be not suitable for the open air.For this reason, need to propose a kind of new analog linear temperature-sensing fire detecting cable and alarm method.
Summary of the invention
The object of the present invention is to provide a kind of disaster detection cable and alarm method based on memory alloy wire and pressure-sensing conductive rubber, this memory alloy wire flexibility under conventional temperature range of surveying in the cable is fine, memory alloy wire acts on the pressure-sensing conductive rubber, when surveying the rising of cable heating temperature, memory alloy wire undergoes phase transition, its stress that acts on the pressure-sensing conductive rubber is increased, and the situation of change of other electrical quantity that causes according to the caused changes in resistance situation of the STRESS VARIATION on the pressure-sensing conductive rubber or by changes in resistance produces fire alarm signal.
The objective of the invention is to realize: a kind of disaster detection cable based on memory alloy wire and pressure-sensing conductive rubber by following technical proposals, it is characterized in that: form by a memory alloy wire, a pressure-sensing conductive rubber silk, described memory alloy wire and described pressure-sensing conductive rubber silk twine setting mutually, and the two ends of described pressure-sensing conductive rubber silk are respectively equipped with electric connection terminal.
A kind of disaster detection cable based on memory alloy wire and pressure-sensing conductive rubber, it is characterized in that: form by a memory alloy wire, pressure-sensing conductive rubber layer, a detecting conductor, described memory alloy wire and described detecting conductor are parallel to be provided with, and is provided with described pressure-sensing conductive rubber layer between described memory alloy wire and described detecting conductor.
A kind of disaster detection cable based on memory alloy wire and pressure-sensing conductive rubber, it is characterized in that: form by a memory alloy wire, pressure-sensing conductive rubber layer, two parallel detecting conductors, described two detecting conductors are parallel to be provided with, be provided with described pressure-sensing conductive rubber layer between described two detecting conductors, described memory alloy wire is wrapped in the outside of described two detecting conductors.
A kind of fire alarm method, it is characterized in that: form by memory alloy wire and pressure-sensing conductive rubber silk and survey cable, it is linear state at high-temperature area that described memory alloy wire is set, under normal temperature environment, described memory alloy wire and described pressure-sensing conductive rubber silk are intertwined mutually, described detection cable heating temperature raises when reaching a high temperature the zone, described memory alloy wire generation deformation, described pressure-sensing conductive rubber silk is exerted pressure, this pressure makes the resistance of pressure-sensing conductive rubber silk produce change, and becomes fire alarm signal to send the resistance variations conversion of signals of this pressure-sensing conductive rubber silk by an electric signal measurement device.
Compared with the prior art the present invention has following advantage:
1, because the present invention has adopted memory alloy wire as detecting conductor, this conductor flexibility under conventional temperature range is good, is convenient to survey the installation of cable.
2, because the present invention has adopted PCR pressure-sensing conductive rubber layer, when alarm temperature raises along with the effect increase of stress thereon, resistance variations is very big, improve the highest environment for use temperature and the maximal use length of temperature sensing cable, reduced the false alarm of normal temperature test survey line cable itself effectively.
3, because the memory alloy wire itself that the present invention adopts has corrosion resistivity, the resistance value when being in the corrosion environment for a long time can great changes will take place, can effectively reduce the false alarm of disaster detection cable under the high corrosion environment.
4, because the elasticity variation characteristic of the memory alloy wire that the present invention adopts itself, the elastic stress in the time of can improving it by the way that improves the memory alloy wire deflection and report a fire has improved the reliability of analog linear temperature-sensing fire detecting cable warning greatly.
Description of drawings
The invention will be further described below in conjunction with drawings and Examples.
Fig. 1, traditional analog linear temperature-sensing are surveyed the structural representation of cable
Fig. 2, temperature-sensing fire detecting cable structural representation of the present invention
The structural representation of Fig. 3, the embodiment of the invention two
The structural representation of Fig. 4, the embodiment of the invention three
The structural representation of one of Fig. 5, the embodiment of the invention three forms
Two structural representation of Fig. 6, the embodiment of the invention three forms
Three schematic appearance of Fig. 7, the embodiment of the invention three forms
The structural representation of Fig. 8, the embodiment of the invention four
The structural representation of Fig. 9, the embodiment of the invention seven
The structural representation of Figure 10, the embodiment of the invention eight
Embodiment
Embodiment one:
Referring to Fig. 2 (accompanying drawing has shown vertical outside drawing of surveying cable), the invention belongs to a kind of analog linear temperature-sensing fire detecting cable, by a memory alloy wire 4, article one, PCR pressure-sensing conductive rubber silk 5 is formed, memory alloy wire 4 twine mutually with PCR pressure-sensing conductive rubber silk 5 and be provided with (one twine another or in twos mutually around), two of pressure-sensing conductive rubber has a terminal A who is used to be electrically connected respectively, B, under the normal temperature, memory alloy wire flexible fine, the stress that acts on the pressure-sensing conductive rubber is very little, the resistivity of pressure-sensing conductive rubber is very big, terminal A, resistance between the B is very big.When fire takes place, when the heating section temperature of detection cable of the present invention is elevated to the martensite reverse transformation and begins temperature As, memory alloy wire generation martensite reverse transformation, memory alloy wire elastic force increases, under the elastic force effect of memory alloy wire, pressure-sensing conductive rubber is squeezed and deforms, resistivity sharply reduces, cause the resistance between terminal A, the B to reduce rapidly, the electric signal measurement device produces and output alarm signal according to the variable quantity of this resistance (or other electrical quantity that changes with resistance variations) or the size of rate of change.
Embodiment two:
Referring to Fig. 3 (accompanying drawing has shown vertical outside drawing of surveying cable), analog linear temperature-sensing fire of the present invention is visited cable, form by a memory alloy wire 6, PCR pressure-sensing conductive rubber silk 7, an insulating sheath 8, memory alloy wire 6 twines mutually with PCR pressure-sensing conductive rubber silk 7 (one winding another or in twos mutually around), two of pressure-sensing conductive rubber has the terminal A, the B that are used to be electrically connected respectively, in the outside of memory alloy wire and pressure-sensing conductive rubber silk insulating sheath 8 is set.Be used for and external insulation.
Embodiment three:
(accompanying drawing only shows the xsect of surveying cable referring to Fig. 4, vertical outside drawing of surveying cable omits), analog linear temperature-sensing fire of the present invention is visited cable, by a memory alloy wire 8,, a pressure-sensing conductive rubber layer 9, article one, detecting conductor (or probing semiconductor) 10 is formed, be provided with described PCR pressure-sensing conductive rubber layer between described memory alloy wire and the detecting conductor (or probing semiconductor), described memory alloy wire becomes to walk abreast with described detecting conductor (or probing semiconductor) and is set together: or be parallel to each other, or mutually twine (one twine another or in twos mutually around), or one along the circumferential direction surrounded another and be the coaxial cable structure.In the present invention, so-called parallel the setting can be adopted following three kinds of forms:
One of form: memory alloy wire 8 is arranged in parallel with detecting conductor 10, the longitudinal sectional drawing of detection cable as shown in Figure 5, the memory alloy wire shape that is in line at normal temperatures, its original high temperature design shape is sine wave shape or spiral-shaped (temperature is higher than memorial alloy martensite reverse transformation finishing temperature Af).
Two of form: memory alloy wire 8 twines mutually with detecting conductor 10 and is provided with, one twine another or in twos with etc. the stranded mode of spiral of pitch twine vertical figure of detection cable as shown in Figure 6.
Three of form: memory alloy wire 8 is the coaxial cable structure with detecting conductor 10, wherein memory alloy wire 8 is core shape bodies, detecting conductor 10 is shell-like conductors, the shell-like conductor is enclosed within the structure setting that is coaxial cable on the core shape body, the cross-sectional view of detection cable as shown in Figure 7, the memory alloy wire shape that is in line at normal temperatures, its original high temperature design shape is sine wave shape or spiral-shaped (so-called high temperature is meant that temperature is higher than memorial alloy martensite reverse transformation finishing temperature Af).
In the present invention, detecting conductor and memory alloy wire can be hollow body, solid or filament knitted body.In the present embodiment, detecting conductor is corresponding with the length of memory alloy wire, can be designed to 50 meters～200 meters.In the application of reality, described pressure-sensing conductive rubber is that the coating form with the electric wire insulation layer of routine combines with memory alloy wire and detecting conductor, in conjunction with concrete mode can adopt following three kinds:
Mode one: on described detecting conductor, coat the pressure-sensitive conductive rubber layer;
Mode two: on described memory alloy wire, coat the pressure-sensitive conductive rubber layer;
Mode three: coating the pressure-sensitive conductive rubber layer respectively on the described detecting conductor He on the described memory alloy wire.
Among the present invention, described detecting conductor (or probing semiconductor) can be conventional tinsel or conductive carbon fibre silk or carbon element elastic wire, or has the conductive plastics or the rubber thread of semiconductor property, also can be with memory alloy wire as described detecting conductor.Described memory alloy wire can be a kind of in Ultimum Ti, NiTi copper memorial alloy, iron-based memorial alloy, the copper-based memory alloy material, memory alloy wire flexibility under conventional temperature range is fine, in case surpass this phase transition temperature, it is very big that the intensity of memory alloy wire and rigidity will become, so-called conventional temperature range refers to memory alloy wire martensitic phase temperature range, its martensite reverse transformation finishing temperature A
fDesign load can in 20 ℃～160 ℃ scopes, select to set, the conventional temperature range of the present invention's design is-40 ℃～45 ℃, when described detection cable is heated, its temperature rises thereupon, when temperature reaches memory alloy wire martensite reverse transformation finishing temperature A
fThe time, memory alloy wire generation martensite reverse transformation, the elastic force that intensity increases and generation is very big, and return to original high temperature design shape, under the elastic force effect of memory alloy wire, memory alloy wire and detecting conductor mutual extrusion, the stress that pressure-sensing conductive rubber is subjected to increases, resistivity decreased, the resistance between memory alloy wire and the detecting conductor descends, and reports to the police according to resistance drop-out value or fall off rate.Described pressure-sensing conductive rubber layer can be to be a kind of in the pressure-sensing conductive rubber of base material with natural rubber, nitrile rubber, ethylene-propylene-diene rubber etc.Conductor among the present invention is relative conductor, and the resistivity that can be used in the normal temperature lower insulator and the ratio of the resistivity of conductor are greater than 10
8Distinguish conductor and insulator.
(accompanying drawing only shows the xsect of surveying cable referring to Fig. 8, vertical outside drawing of surveying cable omits), the analog linear temperature-sensing fire detecting cable of the embodiment of the invention four, by a memory alloy wire 11,, a pressure-sensing conductive rubber layer 12 (belt course),, a detecting conductor (or probing semiconductor) 13, insulating sheath 14 compositions such as grade, be provided with PCR pressure-sensing conductive rubber layer 12 between described memory alloy wire 11 and the detecting conductor 13, described memory alloy wire becomes to walk abreast with described detecting conductor and is set together: or be parallel to each other, or mutually twine (one twine another or in twos mutually around), or one along the circumferential direction surrounded another root and be coaxial configuration.Outside at memory alloy wire and pressure-sensing conductive rubber layer is provided with insulating sheath.
The embodiment of the invention five, six analog linear temperature-sensing fire detecting cable, be respectively at embodiment three, on four the basis, change detecting conductor wherein into thermocouple wire, when the temperature rising reaches the martensite reverse transformation temperature As of memory alloy wire, under the elastic force effect of memory alloy wire, the resistivity that the pressure-sensing conductive rubber layer is set between memory alloy wire and the thermocouple wire reduces, form the interim path between thermocouple wire and the memory alloy wire, memory alloy wire and thermocouple wire are formed interim temperature thermocouple, produce voltage between the two poles of the earth, along with the raising voltage change of heating temperature is big, carry out fire alarm according to the size of its voltage or the speed of change in voltage.
Referring to Fig. 9 (accompanying drawing only shows vertical outside drawing of surveying cable), the analog linear temperature-sensing fire detecting cable of the embodiment of the invention seven, form by a memory alloy wire, pressure-sensing conductive rubber layer, two detecting conductors, described memory alloy wire 15 is wrapped in the outside of described two detecting conductors 17,18, is provided with described PCR pressure-sensing conductive rubber layer 16 between two detecting conductors.Article two, detecting conductor becomes parallel and is set together: or be parallel to each other, or twine mutually (one twine another or in twos mutually around), or one along the circumferential direction surrounded another root and be coaxial configuration.When described detection cable is heated, its temperature rises thereupon, when temperature reaches memory alloy wire martensite reverse transformation finishing temperature A
fThe time, memory alloy wire generation martensite reverse transformation, the elastic force that intensity increases and generation is very big, and return to original high temperature design shape, under the elastic force effect of memory alloy wire, two detecting conductor mutual extrusion, the stress that pressure-sensing conductive rubber is subjected to increases, resistivity decreased causes two resistances between the detecting conductor to descend, and reports to the police according to resistance drop-out value or fall off rate.In the present embodiment, detecting conductor is corresponding with the length of memory alloy wire, can be designed to 50 meters～200 meters.In the application of reality, described pressure-sensing conductive rubber is that the coating form with the electric wire insulation layer of routine combines with detecting conductor, in conjunction with concrete mode can adopt following two kinds:
Mode one: on a described detecting conductor, coat the pressure-sensitive conductive rubber layer;
Mode two: on described two detecting conductors, all coat pressure-sensing conductive rubber layer separately.
Referring to Figure 10 (accompanying drawing only shows vertical outside drawing of surveying cable), the analog linear temperature-sensing fire detecting cable of the embodiment of the invention eight, be the improvement on the basis of embodiment seven: form by a memory alloy wire, pressure-sensing conductive rubber layer, two detecting conductors, insulating sheaths 23, described memory alloy wire 19 is wrapped in the outside of described two detecting conductors 21,22, is provided with described PCR pressure-sensing conductive rubber layer 20 between described two detecting conductors.Article two, detecting conductor becomes parallel and is set together: or be parallel to each other, or twine mutually (one twine another or in twos mutually around), or one along the circumferential direction surrounded another root and be coaxial configuration.Insulating sheath is arranged on the outside of described memory alloy wire, pressure-sensing conductive rubber, two detecting conductors.
The analog linear temperature-sensing fire detecting cable of the embodiment of the invention nine, ten is improvement on the basis of embodiment seven, eight respectively, and at least one in the described detecting conductor is thermocouple wire.When the temperature rising reaches the martensite reverse transformation temperature As of memory alloy wire, under the elastic force effect of memory alloy wire, the resistivity of the pressure-sensing conductive rubber layer that is provided with between two detecting conductors reduces, form the interim path between the detecting conductor, article two, detecting conductor is formed interim temperature thermocouple, detecting conductor produces voltage between the two poles of the earth, along with the raising voltage change of heating temperature is big, carries out fire alarm according to the size of its voltage or the speed of change in voltage.
Embodiment 11:
A kind of fire alarm method, form the detection cable by memory alloy wire and pressure-sensing conductive rubber silk, it is linear state at high-temperature area that described memory alloy wire is set, under normal temperature environment, described memory alloy wire and described pressure-sensing conductive rubber silk are intertwined mutually, described detection cable heating temperature raises when reaching a high temperature the zone, described memory alloy wire generation deformation, described pressure-sensing conductive rubber silk is exerted pressure, this pressure makes the resistance of pressure-sensing conductive rubber silk produce change, and becomes fire alarm signal to send the resistance variations conversion of signals of this pressure-sensing conductive rubber silk by an electric signal measurement device.
Claims (12)
1. disaster detection cable based on memory alloy wire and pressure-sensing conductive rubber, it is characterized in that: form by a memory alloy wire, a pressure-sensing conductive rubber silk, described memory alloy wire and described pressure-sensing conductive rubber silk twine setting mutually, and the two ends of described pressure-sensing conductive rubber silk are respectively equipped with electric connection terminal.
2. disaster detection cable based on memory alloy wire and pressure-sensing conductive rubber, it is characterized in that: form by a memory alloy wire, pressure-sensing conductive rubber layer, a detecting conductor, described memory alloy wire and described detecting conductor are parallel to be provided with, and is provided with described pressure-sensing conductive rubber layer between described memory alloy wire and described detecting conductor.
3. disaster detection cable based on memory alloy wire and pressure-sensing conductive rubber, it is characterized in that: form by a memory alloy wire, pressure-sensing conductive rubber layer, two parallel detecting conductors, described two detecting conductors are parallel to be provided with, be provided with described pressure-sensing conductive rubber layer between described two detecting conductors, described memory alloy wire is wrapped in the outside of described two detecting conductors.
4. disaster detection cable according to claim 1 is characterized in that: described memory alloy wire is a kind of in Ultimum Ti, NiTi copper memorial alloy, iron-based memorial alloy, the copper-based memory alloy material; Described pressure-sensing conductive rubber is a kind of in natural conductive rubber, butyronitrile conductive rubber, the Ethylene Propylene Terpolymer conductive rubber, is provided with insulating sheath in the outside of described memory alloy wire, pressure-sensing conductive rubber.
5. disaster detection cable according to claim 2 is characterized in that: described memory alloy wire is a kind of in Ultimum Ti, NiTi copper memorial alloy, iron-based memorial alloy, the copper-based memory alloy material; Described pressure-sensing conductive rubber is a kind of in natural conductive rubber, butyronitrile conductive rubber, the Ethylene Propylene Terpolymer conductive rubber, is provided with insulating sheath in the outside of described memory alloy wire, pressure-sensing conductive rubber and detecting conductor.
6. disaster detection cable according to claim 3 is characterized in that: described memory alloy wire is a kind of in Ultimum Ti, NiTi copper memorial alloy, iron-based memorial alloy, the copper-based memory alloy material; Described pressure-sensing conductive rubber is a kind of in natural conductive rubber, butyronitrile conductive rubber, the Ethylene Propylene Terpolymer conductive rubber, is provided with insulating sheath in the outside of described memory alloy wire, pressure-sensing conductive rubber and detecting conductor.
7. disaster detection cable according to claim 2 is characterized in that: described memory alloy wire is a core shape body, and described detecting conductor is the shell-like conductor, and detecting conductor is sleeved on the memory alloy wire outside and constitutes coaxial cable formula structure together.
8. disaster detection cable according to claim 2 is characterized in that: coat the pressure-sensitive conductive rubber layer on the described detecting conductor.
9. disaster detection cable according to claim 2 is characterized in that: coat the pressure-sensitive conductive rubber layer on the described memory alloy wire.
10. disaster detection cable according to claim 2 is characterized in that: described detecting conductor is a thermocouple wire.
11. disaster detection cable according to claim 3 is characterized in that: at least one in the described detecting conductor is thermocouple wire.
12. fire alarm method, it is characterized in that: form by memory alloy wire and pressure-sensing conductive rubber silk and survey cable, it is linear state at high-temperature area that described memory alloy wire is set, under normal temperature environment, described memory alloy wire and described pressure-sensing conductive rubber silk are intertwined mutually, described detection cable heating temperature raises when reaching a high temperature the zone, described memory alloy wire generation deformation, described pressure-sensing conductive rubber silk is exerted pressure, this pressure makes the resistance of pressure-sensing conductive rubber silk produce change, and becomes fire alarm signal to send the resistance variations conversion of signals of this pressure-sensing conductive rubber silk by an electric signal measurement device.
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| CNB2005101148219A CN100416616C (en) | 2005-11-14 | 2005-11-14 | Fire detecting cable based on memory alloy wire and pressure-sensing conductive rubber and alarm method |
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| CN105809876B (en) * | 2016-05-06 | 2018-11-02 | 曾以若 | A kind of line type temperature-sensitive detection cable |
| CN110211322A (en) * | 2019-04-28 | 2019-09-06 | 浙江工业大学 | Fire alarm |
| CN112188658B (en) * | 2020-09-30 | 2022-09-09 | 合肥维信诺科技有限公司 | Display panel and display device |
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| GB1461770A (en) * | 1973-05-15 | 1977-01-19 | Bicc Ltd | Fire detection cable |
| GB1573899A (en) * | 1978-05-16 | 1980-08-28 | Burt D W | Line fire detector |
| CN2051370U (en) * | 1989-05-26 | 1990-01-17 | 公安部沈阳消防科学研究所 | Linear temp. sensing fire detector |
| RU2128535C1 (en) * | 1997-08-12 | 1999-04-10 | Тярасов Герман Павлович | Fire alarm |
| CN2465256Y (en) * | 2001-02-28 | 2001-12-12 | 北京首安工业消防工程有限公司 | Recoverable linear temp.-sensing detector |
| CN2515674Y (en) * | 2001-11-09 | 2002-10-09 | 沈阳市通适达自动灭火技术有限公司 | Multistage alarm linear constant temp. fire detection cable |
| CN2565003Y (en) * | 2002-05-24 | 2003-08-06 | 刘智绵 | Composite line-type temp sensor |
| CN2549448Y (en) * | 2002-05-28 | 2003-05-07 | 张陈 | Multi-stage resettable linear temperature sensor against fire disaster |
| CN1499899A (en) * | 2002-11-05 | 2004-05-26 | 张志洪 | Plastic alloy heating wire cable |
| CN2599550Y (en) * | 2003-02-26 | 2004-01-14 | 首安工业消防股份有限公司 | Parallel conducting wire resetting linear constant temp. detector |
| CN2718740Y (en) * | 2004-07-22 | 2005-08-17 | 宝胜科技创新股份有限公司 | Electric resistance cable type temperature measuring alarming cable |
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| CN1967608A (en) | 2007-05-23 |
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